fix: bn clipping in create_program_address (#11951)

web3.js/src/publickey.js

@@ -105,7 +105,7 @@ export class PublicKey {
       Buffer.from('ProgramDerivedAddress'),
     ]);
     let hash = await sha256(new Uint8Array(buffer));
-    let publicKeyBytes = new BN(hash, 16).toArray();
+    let publicKeyBytes = new BN(hash, 16).toArray(null, 32);
     if (is_on_curve(publicKeyBytes)) {
       throw new Error(`Invalid seeds, address must fall off the curve`);
     }